MR45V256A Datasheet, PDF (8/21 Pages) List of Unclassifed Manufacturers – 256k(32,768-Word  8-Bit) FeRAM (Ferroelectric Random Access Memory) SPI

FEDR45V256A-01
MR45V256A
READ(Read from Memory Array)
READ command can be valid when CS# goes “L”,then the op-code and 16bit-adresses are inputted to serial
input”SI”. The inputted adresses are loaded to internal register,then the data from corresponded address is
output at serial-output “SO”.If CS# will keep “L”,the internal adress will be incresed automatically after 8 clocks
and will output the data from new-address.When it reaches the most significant adress,the adress counter rolls
over tostarting adress,and reading cycle can be continued infinitely.
CS#
0 1 2 3 4 5 6 7 8 9 10 11
20 21 22 23
SCK
SI
15 14 13 12
X A14 A13 A12
3210
A3 A2 A1 A0
SO
High-Z
CS#
16bit Address An
24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
m
SCK
SI
SO Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0
Qx
Data Out (An)
Note : WP# = fixed ”H”
Data Out (An+1)
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